Aluminum oxide ceramic nut and manufacturing process thereof

An alumina ceramic and manufacturing process technology, applied in the field of alumina ceramic nuts and their manufacturing processes, can solve the problems of easy loosening and falling off, shrinkage, inconsistent expansion of nuts, affecting the normal operation of sewage treatment, etc., and achieves high strength. Effect

Inactive Publication Date: 2014-05-07
YIXING SHIHUA ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an alumina ceramic nut and its manufacturing process, which solves the problem that the nut is easy to loosen and fall off during operation due to the inconsistent shrinkage and expansion due to different materials, which affects the normal operation of sewage treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An alumina ceramic nut according to the present invention mainly includes the following components and weight percentages:

[0020] Aluminum oxide 90%

[0021] Talc 1%

[0022] Suzhou soil 1%

[0023] Silica 0.5%;

[0024] A kind of manufacturing process of aluminum oxide ceramic nut, this process comprises the following steps:

[0025] 1) Weigh the above components for proportioning;

[0026] 2) Perform 30-hour ball milling on the components that have been properly proportioned in step 1);

[0027] 3) After ball milling, add 10% paraffin for mixing;

[0028] 4) Heating the mixture in step 3), the heating temperature is controlled at 65 degrees Celsius, and it is injected into a metal mold under pressure to form it, and after the wax slurry is solidified, it is demoulded and the formed body is taken out;

[0029] 5) The green body is properly trimmed, embedded in an adsorbent and heated at a high temperatur...

Embodiment 2

[0031] An alumina ceramic nut according to the present invention mainly includes the following components and weight percentages:

[0032] Aluminum oxide 93%

[0033] Talc 3%

[0034] Suzhou soil 3%

[0035] Silica 0.8%;

[0036] A kind of manufacturing process of aluminum oxide ceramic nut, this process comprises the following steps:

[0037] 1) Weigh the above components for proportioning;

[0038] 2) Perform ball milling for 33 hours on the proportioned components in step 1);

[0039] 3) After ball milling, add 13% paraffin for mixing;

[0040] 4) Heating the mixture in step 3), the heating temperature is controlled at 70 degrees Celsius, and it is injected into a metal mold under pressure to form it, and after the wax slurry is solidified, it is demoulded and the formed body is taken out;

[0041] 5) The green body is properly trimmed, embedded in an adsorbent and heated at a high temperature of 1600 degrees C...

Embodiment 3

[0043] An alumina ceramic nut according to the present invention mainly includes the following components and weight percentages:

[0044] Aluminum oxide 95%

[0045] Talc 5%

[0046] Suzhou soil 5%

[0047] Silica 1%;

[0048] A kind of manufacturing process of aluminum oxide ceramic nut, this process comprises the following steps:

[0049] 1) Weigh the above components for proportioning;

[0050] 2) Perform 36-hour ball milling on the components that have been proportioned in step 1);

[0051] 3) After ball milling, add 16% paraffin for mixing;

[0052] 4) Heating the mixture in step 3), the heating temperature is controlled at 75 degrees Celsius, and it is injected into a metal mold under pressure to form it, and after the wax slurry is solidified, it is demoulded and the formed body is taken out;

[0053] 5) The green body is properly trimmed, embedded in an adsorbent and heated at a high temperature of 1620 d...

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PUM

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Abstract

The invention discloses an aluminum oxide ceramic nut and a manufacturing process thereof. The aluminum oxide ceramic nut mainly comprises the following components in percentage by weight: 90-95 percent of aluminum oxide, 1-5 percent of talc powder, 1-5 percent of Suzhou soil and 0.5-1 percent of silicon dioxide. The aluminum oxide is ground and crushed to prepare paste, and the paste is moulded by hot pressure casting, and is fired at a high temperature of 1600 DEG C. The aluminum oxide ceramics nut is high in strength, corrosion-resistant, convergent-divergent which is the same as that of a corundum exposure head, and difficult to loosen and drop during operation.

Description

[0001] technical field [0002] The invention relates to the field of nut preparation, in particular to an alumina ceramic nut and a manufacturing process thereof. Background technique [0003] The existing GY·Q spherical corundum microporous aerators are composed of ceramic shells, plastic screws, plastic nuts, and rubber gaskets. The gasket is composed of three different materials, and its shrinkage and expansion are inconsistent, resulting in easy loosening and falling off during operation, affecting the normal operation of sewage treatment. Contents of the invention [0004] The invention provides an alumina ceramic nut and its manufacturing process, which solves the problem that the nut is easy to loosen and fall off during operation due to inconsistent shrinkage and expansion due to different materials, which affects the normal operation of sewage treatment. [0005] An alumina ceramic nut according to the present invention mainly includes the following components a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
Inventor 吴正良夏锡平卢怀夏美华
Owner YIXING SHIHUA ENVIRONMENTAL PROTECTION
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